Educational



(No Model.)

T. HOOLY. EDUCATIONAL APPLIANCE.

No. 463,230. Patented Nov. 17, 1891.

UNITED STATES PATENT rricn.

THOMAS HOOLY, OF DAVENPORT, IOWVA.

EDUCATIONAL APPLIANCE.

SPECIFICATION forming part of Letters Patent No. 463,230, dated November17, 1891.

' Application filed December 31, 1890. I Serial No. 376,380. (No model.)

To aZZ whom it may concern:

Be it known that I, THOMAS HOOLY, a citi zen of the United States,residing at Davenport, in the county of Scott and State of Iowa, haveinvented a new and useful Educational Appliance, of which the followingis a specification.

This invention relates to educational appliances; and the object of thesame is to effect certain improvements in devices of this character.

To this end the invention consists, broadly speaking, of a casing withinwhich revolves a closed cylinder within another, the latter providedwith openings and the casing and the cylinders inscribed with figures orwords, as well as of certain details of construction, all as hereinaftermore fully described and claimed, and as illustrated in the sheet ofdrawings, wherein- Figure 1 is a front elevation of this improveddevice. Fig.2 is a similar view, showing the two doors or flaps open.Fig. 3 is a rear elevation of the casing stood upon one end and the reardoor open. Fig. 4 is a perspective detail of the two cylinders removedfrom the casing. Fig. 5 isan enlarged perspective detail of the slidingstrip. Fig. 6 is an end elevation of Fig. 5, and Fig. 7 is a centrallongitudinal section of the device.

Referring to the said drawings, the letter O designates a casing, whichis preferably of about the construction shown and having an opening inits front, above and below which are upper and lower doors U and L, andon the back of the casing is a narrow opening closed by a rear door R.WVit-hin and longitudinally of the casing is journaled an inner cylinderI and an outer cylinder 0, the ends of the latter revolving upon andaround the solid shaft S of the former, and one of them being providedwith a short tubular shaft S, having a handle 11 projecting through oneend of the casing, while the shaft S of the inner cylinder projectsthrough the other end of the casing and forms a handle therefor.

The letter A designates a base or block adapted, as in Fig. 3, to restupon a support, and this base has an opening which under thesecircumstances receives the shaft S of the inner cylinder, therebysupporting the entire device, yet permitting the rotation of thecylinders. The inner cylinder is solid,

whereas the outer cylinder is composed of end pieces connected by anumber of strips spaced so as to leave openings between the strips.These openings and the strips are of the same width as each of the doorsand of one-half the width between the adjacent edges of the upper andlower doors when they are closed, as in Fig. 1. The lower door on beingopened exposes another strip or opening on one cyllIlCl61',Wl16I62LS theupper door on being opened discloses a stationary strip T along the topof the casing.

Upon the inner cylinder are marked rows of figures, ten in each row,there being, preferably, one complete row of each figure, one blank row,and several other rows in which the figures are promiscuously arranged.Upon the strips of the outer cylinder, upon the inner faces of thedoors, and upon the top strip T are also arranged promiscuous lines offigures.

In addition, upon the outer cylinder (and, in fact-,upon the innercylinder also) may be ranged lines of figures which will stand in vertical rows when the device is stood upon end, 'as" in Fig. 3, and,ifdesired, figures may also be arranged in this manner upon the inner sideof the rear door, so that when this dooris opened the cylinders can beturned to make various combinations of numbers, each having two figures.The doors U and L being closed, a single strip 011 the outer cylinder isexposed, and a row of figures may also be exposed through the opening inthe outer cylinder. By turning down the lower door the figures thereonare exposed as well as another strip or opening of the outer cylinder.Byturning up the upper door U the row of figures thereon and on the topstrip T are exposed, so that under the last condition six rows offigures are exposed. These figures may be added or any two rows may beexposed for subtraction or multiplication at the instructors ingenuity.

In order to effect even a greater number of combinations of figures, Ipreferably provide upon the outer cylinder one or more of the concavestrips V (best seen in Fig. 6) marked with figures upon its concaveface, and sliding upon each of such strips is a sheath E, havingalternate strips and spaces in its face. When this sheath is moved byhand longitudinally upon the concave strip V, the crossstrips of thesheath will cover dilferent fi ures on the concave strip, and if thelatter be marked thereon with chalk the cross-strips will not efface it.Said cross-strips being provided with figures on their faces, a greatvariety of combinations can be made. .All the ing of letters, Words,sentences, grammar, languages, and various other studies, and I reservethe right to make the necessary trivial changes in structure andrelative proportion of parts whereby this may be effected.

\Vhat isclaimed as new is- 1. The combinatiomwith the casing having anopening, a strip along one side thereof, and a door hinged to the outeredge of the strip and adapted to close over the same, of a cylinderWithin the casing and marks upon the cylinder, upon the outer face ofsaid strip, and upon the inner face of said door as and for the purposeset forth.

2. The combination, with a concave strip adapted to receive figures inchalk on its concave face, of a sheath comprising a closed back in rearof said strip, and separated strips extending across the face of theconcave strip, having figures on their faces and connected at their endsto said back, as and for the purpose set forth.

3. The combination, with a casing having an opening, doors at the sidesthereof, a solid cylinder journaled in the casing, figures marked on thecasing adjacent its opening and on the cylinder, and end piecesjournaled on the shaft of said cylinder, of concave strips connectingsaid end pieces, having figures on their outer faces, sheaths comprisingclosed backs in rear of said strips, and separated strips extendingacross the faces of the con- THOS. HOOLY,

\Vitnesses:

J. H. CUMP, GEORGE W. AsHroN.

